Yes. Level 3 means third year. There are very few third year subjects that you won't completely fail without previous knowledge and most of them are only third year so people who run into cul-de-sacs can satisfy breadth requirements (e.g. wine tasting).
Don't pay any attention to your instinct of what sounds interesting or not when reading subject descriptions. They give no indication of how interesting a subject will be at all: they really only serve to inform you of what topics will be covered for equivalence purposes and to say "ah, when I finish calc 2, I'll have learnt the calculus I need for electromagnetism." The only thing you should pay any attention to when figuring out whether a subject will be interesting or not is the subject area. Don't worry about whether "digital systems design" will be interesting, for example: worry about whether electrical engineering will be interesting.
Also just about every third year subject has first year subjects in the same field. If you like the look of a third year physics subject, take first year physics. If you like the look of a third year psych subject, take first year psych.